For brown spots
Age spots are, as their name suggests, characteristic of skin ageing. They can also be a sign of skin that has been repeatedly damaged by UV rays. As you know, sun exposure and skin ageing are (very) closely linked.
Bakuchiol has been shown to reduce both the intensity of hyperpigmentation and the extent of dark spots. This property is partly attributable to its effect on melanogenesis (melanin synthesis, the source of your skin colour, but also your dark spots). In fact, it seems to be able to interfere with 2 of its levers: tyrosinase (an enzyme that 'activates' the production of melanin) and a hormone involved in stimulating melanocytes (cells specialised in synthesising the melanin pigment).
For acne
Bakuchiol is one of the few agents (other than retinoids) with proven efficacy on acne-prone skin. It is thought to actively target P. acnes, one of the main bacteria causing acne. Several studies have shown that it is capable of reducing acne lesions and any associated inflammation. According to one study, the results are even more convincing when it is combined with salicylic acid. In cosmetics, it can prevent the appearance of new blackheads by limiting sebum lipid oxidation.
Remember: acne is, by definition, a skin condition. Therefore, it cannot be 'treated' with cosmetics, which are only there to preserve or improve the overall appearance of your skin. If you have papules or pustules, seek medical advice.
For wrinkles and fine lines
Scientific research has confirmed that bakuchiol is an effective anti-ageing ingredient. However, its mechanisms of action have not been studied to the same extent as retinol, which for many remains THE benchmark for reducing the appearance of wrinkles. It appears to have a retinol-like profile that enables it to stimulate the production of type I and IV collagen. It is also thought to act on type III collagen synthesis in mature skin. This effects both the length and depth of wrinkles, which appear less visible after 12 weeks (based on 2 applications a day).
Products enriched with bakuchiol are also powerful preventive allies. This active ingredient acts like a shield against free radicals, which are responsible for premature skin ageing. How does it do this? By activating a transcription factor, which plays a key role in cells resistance to oxidative stress, and limiting cellular lipid peroxidation.
For the eye contour area
If you're wondering whether you can apply bakuchiol to the eye contour area, the answer is YES. (However, check the recommendations for use of your cosmetic products: some formulas, whether enriched with bakuchiol or not, may not be suitable for this delicate area).
Given its benefits for wrinkles, this 100% natural active ingredient can, of course, be useful for smoothing out crow's feet. But it doesn't stop there, as its anti-pigmentation properties could also benefit dark circles. Bakuchiol could be particularly useful for lightening dark circles (linked to an accumulation of melanin).